GeForce 8600 GS (OEM) vs Geforce GTX 780

Intro

Compare that to the Geforce GTX 780, which features core clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 memory. It features 2304 SPUs along with 192 TAUs and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GS (OEM)		47 Watts
Geforce GTX 780		250 Watts
	Difference: 203 Watts (432%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should perform a lot faster than the GeForce 8600 GS (OEM) overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 8600 GS (OEM)		12800 MB/sec
	Difference: 275584 (2153%)

Texel Rate

The Geforce GTX 780 should be quite a bit (approximately 1818%) more effective at anisotropic filtering than the GeForce 8600 GS (OEM). (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 8600 GS (OEM)		8640 Mtexels/sec
	Difference: 157056 (1818%)

Pixel Rate

The Geforce GTX 780 is quite a bit (more or less 859%) more effective at full screen anti-aliasing than the GeForce 8600 GS (OEM), and also capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 8600 GS (OEM)		4320 Mpixels/sec
	Difference: 37104 (859%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.